Hi I am 22 yrs and Iam trying to get pregnant. My period is usually 30 days and the last time I had it was on the 27th of April and it didn't show up until today 8th June, today I made the home test (urine) but was negative I get nausea sometimes headaches always and cramps not like period cramps abit different, back pain.. does the negative result mean am not pregnant or should I wait for a couple of days and have a blood test?